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restart_linux.go
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/
restart_linux.go
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//go:build linux
// +build linux
package ota
import (
"fmt"
"log"
"os"
"syscall"
)
func Restart(extraArgs ...string) error {
executable, err := os.Executable()
if err != nil {
return fmt.Errorf("failed to resolve the path to the current executable: %w", err)
}
workingDirectory, err := os.Getwd()
if err != nil {
return fmt.Errorf("failed to resolve the current working directory: %w", err)
}
execSpec := &syscall.ProcAttr{
Dir: workingDirectory,
Env: os.Environ(),
Files: []uintptr{
os.Stdin.Fd(),
os.Stdout.Fd(),
os.Stderr.Fd(),
},
}
var args []string
if len(extraArgs) != 0 {
args = appendArgIfNotPresent(os.Args[1:], extraArgs)
} else {
args = os.Args[1:]
}
fork, err := syscall.ForkExec(executable, args, execSpec)
if err != nil {
return fmt.Errorf("failed to spawn a new process: %w", err)
}
log.Printf("new process has been started successfully [old_pid=%d,new_pid=%d]\n",
os.Getpid(), fork)
os.Exit(0)
return nil
}